Which of the following statements about solid friction is/are correct?

I. Friction depends on the nature of the surfaces in contact
II. Friction depends on the area of contact
III. Friction always acts in the direction of motion.

Similar Questions

250g of lead at 170oC is dropped into 100g of water at 0oC. If the final temperature is 12oC, the sp...

Longitudinal waves cannot be ...

Light of energy 5.0 eV falls on a metal of work function 3.0 eV and electrons are emitted, determine...

A boy looks at the image of an object in a plane mirror. He observes two images, a main bright one a...

What is the least possible error encountered when taking measurement with a meter rule? ...

An object weight 10N immersed in a liquid displaces a quantity of the liquid. If the liquid displace...

Two thermo flasks of volume Vx and Vy are filled with liquid water at an initial temperature of 0oC....

A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, ...

Which of the following statements about matter is not correct? ...

The lower fixed part of a faulty thermometer reads 2°C while the upper fixed point is 100°C....